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【已解决】wepack打包时出错:Module parse failed jpg Unexpected character

Webpack crifan 2635浏览 0评论

继续研究:

【整理】webpack中output的path和publicPath和webpack-dev-server的devServer的contentBase和publicPath的区别和作用

时,想要去搞懂和演示output的publicPath时,用示例代码:

app.css

/* for debug publicPath */
.demo_image {
    width: 128px;
    height: 128px;
    background-image: url(‘assets/img/user1-128×128.jpg’)
}

App.js

              <div className=’box col-lg-12′>
                <div className="demo_image" />
              </div>

出错:

➜  react-hot-boilerplate git:(master) ✗ webpack –progress –colors
process.env.NODE_ENV=undefined, isProd=false
Hash: a26d0ee2a2a5623dadf4
Version: webpack 3.5.4
Time: 24636ms
           Asset     Size  Chunks                    Chunk Names
        index.js  5.38 MB       0  [emitted]  [big]  index
vendor.bundle.js    32 kB       1  [emitted]         vendor
[212] (webpack)/buildin/module.js 623 bytes {0} [built]
[243] (webpack)/buildin/global.js 1.21 kB {0} [built]
[309] ./src/index.js 573 bytes {0} [built]
[407] ./src/App.js 16.2 kB {0} [built]
[779] ./src/app.css 994 bytes {0} [built]
[780] ./node_modules/css-loader!./src/app.css 1.22 kB {0} [built]
[782] ./src/assets/img/user1-128×128.jpg 356 bytes {0} [built] [failed] [1 error]
[785] multi react-hot-loader/patch ./src/adminlte_app.js 40 bytes {1} [built]
[789] ./src/adminlte_app.js 23 kB {1} [built]
    + 781 hidden modules
ERROR in ./src/assets/img/user1-128×128.jpg
Module parse failed: /Users/crifan/dev/dev_root/daryun/Projects/xxxAdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate/src/assets/img/user1-128×128.jpg Unexpected character ‘�’ (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
@ ./node_modules/css-loader!./src/app.css 6:138-179
@ ./src/app.css
@ ./src/App.js
@ ./src/index.js

感觉是缺少了jpg等图片的loader

webpack Module parse failed jpg Unexpected character

Unexpected character issues when using `url` inside pcss · Issue #160 · postcss/postcss-loader

url-loader和file-loader,但是到底用哪个,需要去搞清楚

reactjs – cannot load png files with webpack, unexpected character – Stack Overflow

vuejs – webpack module parse failed Unexpected character ‘@’ – Stack Overflow

【基本解决】Webpack中url-loader和file-loader区别以及到底用哪个

【总结】

然后此处用url-loader即可加载对应的图片文件了。

先去安装对应的库:

npm install url-loader file-loader

代码和配置如下:

package.json

    "url-loader": "^0.5.9",
    "file-loader": "^0.11.2",

webpack.config.js

module: {
    rules: [
      。。。
      {
        test: /\.(svg|woff2?|ttf|eot|jpe?g|png|gif)$/i,
        use :
          {
            loader: ‘url-loader’,
            query: {
              // inline base64 DataURL for <=2KB images, direct URLs for the rest
              limit: 2048,
              name: ‘[name]_[md5:hash:base64:6].[ext]’
            }
          }
      }
    ]
  },

代码:

app.js

<div className="demo_image" />

app.css:

.demo_image {
    width: 128px;
    height: 128px;
    background-image: url(‘assets/img/user1-128×128.jpg’)
}

效果:

➜  react-hot-boilerplate git:(master) ✗ npm run build
> react-hot-boilerplate@1.0.0 prebuild /Users/crifan/dev/dev_root/daryun/Projects/xxx/sourcecode/web/AdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate
> npm run clean
> react-hot-boilerplate@1.0.0 clean /Users/crifan/dev/dev_root/daryun/Projects/xxx/sourcecode/web/AdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate
> rm -rf build/ build.zip
> react-hot-boilerplate@1.0.0 build /Users/crifan/dev/dev_root/daryun/xxxurcecode/web/AdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate
> cross-env NODE_ENV=production webpack -p –progress –colors
process.env.NODE_ENV=production, isProd=true
Hash: 985691961846e0129a56
Version: webpack 3.5.4
Time: 21765ms
                               Asset       Size  Chunks                    Chunk Names
         dist/img/credit/paypal2.png    1.37 kB          [emitted]
            user1-128x128_vykxhX.jpg    2.88 kB          [emitted]
                    vendor.bundle.js      11 kB       1  [emitted]         vendor
                          index.html    2.55 kB          [emitted]
                      dist/.DS_Store    6.15 kB          [emitted]
                dist/img/avatar3.png    9.78 kB          [emitted]
                dist/img/avatar2.png    8.84 kB          [emitted]
                 dist/img/avatar.png    8.54 kB          [emitted]
               dist/img/avatar04.png      14 kB          [emitted]
                  dist/img/.DS_Store    6.15 kB          [emitted]
                dist/img/avatar5.png    8.01 kB          [emitted]
          dist/img/credit/cirrus.png    1.59 kB          [emitted]
               dist/img/boxed-bg.jpg     124 kB          [emitted]
dist/img/credit/american-express.png    2.21 kB          [emitted]
               dist/img/boxed-bg.png    43.7 kB          [emitted]
                            index.js    1.11 MB       0  [emitted]  [big]  index
          dist/img/credit/paypal.png    2.05 kB          [emitted]
      dist/img/credit/mastercard.png    1.59 kB          [emitted]
          dist/img/credit/mestro.png    1.59 kB          [emitted]
            dist/img/credit/visa.png    1.14 kB          [emitted]
                  dist/img/icons.png    1.15 kB          [emitted]
          dist/img/user2-160×160.jpg    7.07 kB          [emitted]
          dist/img/default-50×50.gif  184 bytes          [emitted]
          dist/img/user1-128×128.jpg    2.88 kB          [emitted]
          dist/img/user4-128×128.jpg    3.48 kB          [emitted]
          dist/img/user5-128×128.jpg    6.45 kB          [emitted]
          dist/img/user3-128×128.jpg    3.51 kB          [emitted]
          dist/img/user7-128×128.jpg    6.43 kB          [emitted]
          dist/img/user6-128×128.jpg    4.34 kB          [emitted]
          dist/img/user8-128×128.jpg    5.06 kB          [emitted]
[234] (webpack)/buildin/global.js 509 bytes {0} [built]
[300] ./src/index.js 467 bytes {0} [built]
[389] ./src/App.js 15.5 kB {0} [built]
[756] ./src/app.css 994 bytes {0} [built]
[757] ./node_modules/css-loader!./src/app.css 548 bytes {0} [built]
[759] ./src/assets/img/user1-128×128.jpg 70 bytes {0} [built]
[762] multi react-hot-loader/patch ./src/adminlte_app.js 40 bytes {1} [built]
[766] ./src/adminlte_app.js 22.6 kB {1} [built]
    + 759 hidden modules
> react-hot-boilerplate@1.0.0 postbuild /Users/crifan/dev/dev_root/daryun/Projects/xxxsourcecode/web/AdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate
> npm run package
> react-hot-boilerplate@1.0.0 package /Users/crifan/dev/dev_root/daryun/Projects/xxxsourcecode/web/AdminManagement/reference/react-hot-boilerplate/react-hot-boilerplate
> zip -r build.zip build/
  adding: build/ (stored 0%)
  adding: build/dist/ (stored 0%)
  adding: build/dist/.DS_Store (deflated 93%)
  adding: build/dist/img/ (stored 0%)
  adding: build/dist/img/.DS_Store (deflated 97%)
  adding: build/dist/img/avatar.png (stored 0%)
  adding: build/dist/img/avatar04.png (stored 0%)
  adding: build/dist/img/avatar2.png (stored 0%)
  adding: build/dist/img/avatar3.png (stored 0%)
  adding: build/dist/img/avatar5.png (stored 0%)
  adding: build/dist/img/boxed-bg.jpg (deflated 7%)
  adding: build/dist/img/boxed-bg.png (deflated 0%)
  adding: build/dist/img/credit/ (stored 0%)
  adding: build/dist/img/credit/american-express.png (stored 0%)
  adding: build/dist/img/credit/cirrus.png (stored 0%)
  adding: build/dist/img/credit/mastercard.png (stored 0%)
  adding: build/dist/img/credit/mestro.png (stored 0%)
  adding: build/dist/img/credit/paypal.png (stored 0%)
  adding: build/dist/img/credit/paypal2.png (stored 0%)
  adding: build/dist/img/credit/visa.png (stored 0%)
  adding: build/dist/img/default-50×50.gif (deflated 7%)
  adding: build/dist/img/icons.png (deflated 2%)
  adding: build/dist/img/user1-128×128.jpg (deflated 5%)
  adding: build/dist/img/user2-160×160.jpg (deflated 3%)
  adding: build/dist/img/user3-128×128.jpg (deflated 5%)
  adding: build/dist/img/user4-128×128.jpg (deflated 0%)
  adding: build/dist/img/user5-128×128.jpg (deflated 2%)
  adding: build/dist/img/user6-128×128.jpg (deflated 3%)
  adding: build/dist/img/user7-128×128.jpg (deflated 2%)
  adding: build/dist/img/user8-128×128.jpg (deflated 3%)
  adding: build/index.html (deflated 68%)
  adding: build/index.js (deflated 69%)
  adding: build/user1-128x128_vykxhX.jpg (deflated 5%)
  adding: build/vendor.bundle.js (deflated 67%)

对应的js中的引用的代码build后变为:

提醒:

虽然此处url-loader没有显式地依赖于file-loader,但是实际上内部是需要的。

因为当文件大小大于limit时,就会调用file-loader,就会报错:

ERROR in ./src/assets/img/user1-128×128.jpg
Module build failed: Error: Cannot find module ‘file-loader’

所以需要安装:

➜  react-hot-boilerplate git:(master) ✗ npm install file-loader
npm WARN babel-loader@6.2.10 requires a peer of webpack@1 || 2 || ^2.1.0-beta || ^2.2.0-rc but none was installed.
npm WARN react-dom@15.6.1 requires a peer of react@^15.6.1 but none was installed.
added 2 packages in 10.164s

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